As you all know, Windows 8 will be the first release of Windows NT which supports the ARM architecture. Microsoft hasn't been particularly forthcoming about this new Windows variant, but that's changing today. The company has posted a long and in-depth blog post about Windows 8 on ARM.

"Eclipse is the closest equivalent to Visual Studio and it's only good because it's backed by IBM and the Apache Foundation and gets a ton of resources. There is no real FOSS equivalent to Access, Exchange, SharePoint or .NET.

About your Eclipse comment, I was going to say that MonoDevelop is getting pretty good and is very similar in spirit to Visual Studio:

http://monodevelop.com/ "
Don't make me laugh. I've used both and Visual Studio wins hands down in terms of features, performance and usability. I mean, it's not perfect, but it's much better than the alternatives. With ReSharper, I can't imagine using any other tool to do .NET development.

Then you said there was no FOSS equivalent to .NET which is absurd. First of all, there is a complete .NET clone--Mono.

It's not a complete clone, it's a half-completed, buggy clone. And more to the point: it's a clone. It's not something that the FOSS world came up with the provide a unified, cross-platform development system that integrates with all sorts of applications. .NET can be used to build PowerShell scriptlets, webservices, even database procedures. All using a common runtime with a common library. Where's the equivalent in the OSS world? There isn't. Even if Mono is a clone, it's not used in nearly the same capacity that .NET is on Windows.

Second, there are many other environments which are good substitutes or "equivalents" for .NET around. Many people might consider Java as a candidate for example.

Java wasn't developed by the OSS community. It's been open-sourced, sort of, kind of, maybe, but it's still primary developed by Oracle.

There is an army of FOSS CMS systems; they own the market. Your other selections are worthy of a bit of debate but you certainly overstate things:

Own the market? Again, I have to laugh. I'm sure plenty of people use these, but Exchange owns the market with well over 60% of marketshare, with Lotus Notes in a distant second in the teens and then all the rest.